Question

1.
A point size body is moving along a circle at an angular
velocity 2.8rads – 1. If centripetal acceleration of body
is 7ms –2 then its speed is
(A) 1.25ms -
(B) 2.5ms -1
(D) 7ms -1
(C) 3.5ms -1​

Answer 1

Answer:

centripetal acceleration = V.x angular velocity

V = a/w

V = 7/2.8

V = 70/28

V = 2.5m/s